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Appendix C

The content in this publication was current at the time it was published, but it is not being updated. The publication is provided for historical purposes only.​

Table 19. Supplementation and Various Outcomes

Outcome N R R 2 p
Executive Functions 11 0.726 0.527 0.0075
Inhibition and flexibility
 8 0.777 0.605 0.0138
Attention 16 0.457 0.208 0.0652
Other cognitive and motor skills 7 0.203 0.041 0.6297

Note. N=number of effect sizes. A positive correlation indicates that supplementation with dopamine precursors is associated with better performance on these cognitive tasks.

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